How to delete messages saved in mbox

Article:		Update to Mac OS X Terminal, Part 3
Subject:		How to delete messages saved in mbox
Date:		2003-03-31 03:51:15
From:		anonymous2
Response to: How to delete messages saved in mbox
Messages kept in my inbox mail and sent mails which are of no need to me any more I bring to scene the text and i click delete but i dont see that my space in my html minimised . I think that i do something wrong can you help me